A hydration reservoir is provided. The hydration reservoir may include at least two panels of resilient material joined together at edges to define a bladder and a bladder volume for storing a liquid. The at least two panels may be deformable as the bladder is emptied of liquid. One of the at least two panels may be molded into a three-dimensional shape.

A fuel tank cap for two-way gas intake and exhaustion contains: a body including a first lid and a second lid. The first lid has a coupling orifice configured to connect with a pressure adjustment module, the pressure adjustment module has a rotatable knob and a limiting unit, and the first lid has a locking rib. A first spring is defined between the first lid and the second lid, and the second lid includes an accommodation groove and a connection portion. The accommodation groove accommodates a flexible adjustment valve and a second spring, and the flexible adjustment valve has a main part and a flexible stop unit which has a movement travel in which the flexible stop unit expends or retracts. The main part has at least one seal loop and a defining rib. The second spring abuts against the defining rib and the limiting unit.

A hydration reservoir is provided. The hydration reservoir may include at least two panels of resilient material joined together at edges to define a bladder and a bladder volume for storing a liquid. The at least two panels may be deformable as the bladder is emptied of liquid. One of the at least two panels may be molded into a three-dimensional shape.

A hydration reservoir is provided. The hydration reservoir may include at least two panels of resilient material joined together at edges to define a bladder and a bladder volume for storing a liquid. The at least two panels may be deformable as the bladder is emptied of liquid. One of the at least two panels may be molded into a three-dimensional shape.

A lid with a stopper for use with a beverage container is described. The lid includes a lid body to fit into an opening of the beverage container. The lid includes a stopper to threadably engage with the lid body. A drink opening is formed between the lid body and the stopper. The stopper rotates between open and closed positions to open and close the drink opening. The stopper includes hook members. The hook members are movable relative to the stopper. The hook members releasably hold the stopper to the lid.

A dispenser with self-closing cap allows opening of said cap, dispensing of contents from said dispenser and closing of said cap using only one hand. In the first embodiment, said dispenser comprises a cap, tube, base and elastic cord internally disposed between said cap and said base. In a second embodiment said dispenser incorporates a D-ring attachment into the dispenser of the first embodiment. Multiple dispensers of the first embodiment can be transported and stored on one's person in a caddy with integral matching boreholes to receive said dispensers. Multiple dispensers of the second embodiment can be grouped on a split ring much as keys on a keyring. In a third embodiment the cap of said dispenser incorporates an O-ring which guards the contents of said container against moisture or allows the storage and dispensing of gels, creams or other viscous fluids. Said dispenser finds application in diverse areas; for example, in fly fishing for the dispensing of split shot; in the work shop for dispensing of small screws, washers, and related hardware; in the arts and craft field for the dispensing of beads, and in the medical field for the dispensing of pills.

A hydration reservoir is provided. The hydration reservoir may include at least two panels of resilient material joined together at edges to define a bladder and a bladder volume for storing a liquid. The at least two panels may be deformable as the bladder is emptied of liquid. One of the at least two panels may be molded into a three-dimensional shape.